I have a 50 foot sailboat and have purchased an R75 wanting to listen to various USB cruiser "nets" but am unsure how to deal with the antenna. My previous boat had an Icom M802 transceiver which was connected via coax and an automatic antenna tuner to an insulated section of the stainless backstay. Noise was generally not an issue with the M802 while receiving but testing the R75 with just a random wire outside the cabin along the deck (30 feet?) all I hear is noise...maybe at times I can barely hear WWV but that's it. Note that my testing was done in a marina with lots of other boats nearby and connected up to shore power...however with all the electronics now installed and operating even when offshore I suspect my noise problems are at least in part locally generated and won't go away. Can someone suggest a possible solution? I have spare halyards that can be used to haul up temporary long wire type antenna but not sure that'll help the noise problem. Any thoughts/suggestions will be greatly appreciated.